Not sure what the problem is im on the HTC Trophy wp 7.5 and this is a replacement device, but im just now noticing this today im not sure if its because im on xbox live and its on messenger on there also knocking me off on my phone or what. Ive never had this issue before but when i set it to appear online on my phone, maybe 15-20 mins later when i check it its reverting back to appear offline on its own. On my trophy before this i never had that issue and the only time it reverted to offline on its own was when my battery was low going into battery saver mode.

anybody else have this issue or know a fix for this? whats causing it to do this?